States › North Dakota › Ransom County › Flood
Flood in Ransom County, North Dakota
44 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Ransom County, North Dakota, has 44 flood events in the NCEI record since 1950, with at least one in 20 different years.
June is the busiest month, with 14 of the recorded events. The last 20 years account for 20 events against 24 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 3.6% of the 1,221 flood events recorded in North Dakota; its 5.1 per 100 square miles compares with 1.8 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with North Dakota
| Measure | Ransom County | North Dakota | US |
|---|---|---|---|
| Flood events since 1950 | 44 | 1,221 | 183,559 |
| Per 100 square miles | 5.1 | 1.8 | 5.2 |
| Per 10,000 residents | 77.5 | 15.8 | 5.5 |
| Deaths recorded | 1 | 16 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
0Feb
0Mar
5Apr
12May
5Jun
14Jul
4Aug
2Sep
2Oct
0Nov
0Dec
0
Recorded events
All 44 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 16 Apr 2023 | Flood | — | $64K | — | — | — | County |
| 16 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 8 Apr 2019 | Flood | — | $50K | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | $5K | $25K | — | — | County |
| 28 May 2015 | Flash Flood | — | — | $100K | — | — | County |
| 20 Jun 2013 | Flash Flood | — | $5K | $20K | — | — | County |
| 20 Jun 2013 | Flash Flood | — | $5K | $50K | 1 | — | County |
| 3 Apr 2011 | Flood | — | — | — | — | — | County |
| 12 Aug 2010 | Flash Flood | — | $10K | $15K | — | — | County |
| 1 Apr 2010 | Flood | — | — | — | — | — | County |
| 21 Mar 2010 | Flash Flood | — | $500 | — | — | — | County |
| 18 Mar 2010 | Flood | — | — | — | — | — | County |
| 1 May 2009 | Flood | — | $5K | — | — | — | County |
| 1 Apr 2009 | Flood | — | $5K | — | — | — | County |
| 27 Mar 2009 | Flash Flood | — | $500 | — | — | — | County |
| 22 Mar 2009 | Flood | — | $5K | — | — | — | County |
| 15 Jun 2007 | Flood | — | — | — | — | — | County |
| 2 Jun 2007 | Flood | — | — | — | — | — | County |
| 6 May 2007 | Flood | — | — | — | — | — | County |
| 6 May 2007 | Flash Flood | — | — | — | — | — | County |
| 1 Apr 2006 | Flood | — | $113K | — | — | — | County |
| 21 Mar 2006 | Flood | — | — | — | — | — | County |
| 1 Jul 2005 | Flood | — | — | — | — | — | Forecast zone |
| 29 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 26 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 11 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 1 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 31 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 23 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 7 Apr 2001 | Flash Flood | — | — | — | — | — | County |
| 1 Apr 2001 | Flood | — | $250K | — | — | — | Forecast zone |
| 2 Sep 2000 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2000 | Flash Flood | — | — | — | — | — | County |
| 19 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 1999 | Flood | — | — | — | — | — | Forecast zone |
| 9 Jul 1998 | Flood | — | $100K | — | — | — | Forecast zone |
| 3 Apr 1997 | Flood | — | $500K | — | — | — | Forecast zone |
| 10 Apr 1996 | Flood | — | — | — | — | — | Forecast zone |
| 10 Apr 1996 | Flood | — | — | — | — | — | Forecast zone |
| 10 Apr 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Ransom County had?
44 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Ransom County?
16 Apr 2023 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Ransom County?
The flood of 3 Apr 1997, with property damage estimated by NCEI at $500K.
How does Ransom County compare with North Dakota for flood?
5.1 events per 100 square miles against 1.8 statewide; the county holds 44 of the state's 1,221 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.